48results about How to "Benign environmental effect" patented technology

The invention discloses a device for ecologically culturing seashell and alga in shallow sea and a method thereof. The device comprises a seashell culture raft and an alga culture raft. The seashell culture raft comprises at least two paralleled floating ropes; buoys are arranged on the floating ropes and are connected with the floating ropes through floating ties; the two ends of each floating rope are fixed by underwater fixing mechanisms; the alga culture raft made by at least one culture curtain is arranged above each two adjacent floating ropes; the adjacent culture curtains are fixed by floating bamboo perpendicular to the floating ropes; and the two ends of the floating bamboo are connected with the floating ties. The device can be used to carry out the hanging culture of the seashell on the floating ropes and carry out the culture of the alga in the culture curtains floating above the floating ropes, thereby realizing the composite culture of the seashell and the alga. The device and the method have the advantages of reducing the culture cost, improving the culture efficiency and culture space utilization factor, and having good effects on the comprehensive use of shallow sea waters, the improvement of the water environment and the prevention and control of diseases.

The invention relates to a preparation method of an aqueous urethane resin, in particular to an aqueous fluoro modified urethane resin and an aqueous fluoro modified urethane resin paint prepared by an aqueous fluoro modified urethane resin preparation method. The method comprises the following steps: preparing a fluoro modified polyurethane prepolymer, preparing the aqueous fluoro modified urethane resin by the aqueous fluoro modified urethane resin preparation method, and then preparing the aqueous fluoro modified urethane resin paint from the aqueous fluoro modified urethane resin. The aqueous fluoro modified urethane resin paint can be prepared by utilizing the product of the invention, and the prepared water paint is a single-component and normal-temperature curing one which facilitates construction and has favorable adhesive force, smudge resistance, water resistance, alkali resistance, durability and the like. Besides, the water paint needs no curing agent or solvent, thereby fully reflecting the characteristics of safety and environmental friendliness.

The invention discloses an aqueous double-component polyurethane varnish and a preparation method of the aqueous double-component polyurethane varnish. The raw material formula of the aqueous double-component polyurethane varnish is composed of a component 1 and a component 2, wherein the component 1 comprises the following components: 55-65% of hydroxy polyurethane dispersion, 15-18% of water, 0.2-0.5% of acetobutyryl cellulose flatting agent, 0.5-0.8% of flowing deformation auxiliary agent, 0.5-0.8% of nano silica particle, 0.1-0.3% of defoamer, 0.3-0.5% of defoaming agent, 0.1-0.3% of thickener, 0.4-0.6% of film-forming auxiliary agent, 0.2-0.5% of aqueous drier and 0.5-1.5% of teflon wax; and the component 2 comprises 15-20% of polyisocyanate and 1-3% of degassing solvent. The aqueousdouble-component polyurethane varnish has the characteristics of fast drying speed and good leveling property, is not easy to generate bubbles, is easy to store, and can endow a varnish film with high hardness and high anti-scratching property.

The invention discloses a preparation method and a sensitivity regulation method of a pH type food freshness indication label. The preparation method comprises: extracting a pH sensitive natural dye to obtain a pH sensitive natural dye concentrated solution; dissolving a natural polymer material in a solvent to obtain a film-forming stock solution; sequentially adding a plasticizer, a water absorbent, a phase transfer catalyst and the pH sensitive natural dye concentrated solution into the film-forming stock solution, and fully stirring until the materials are uniformly mixed and dispersed toobtain a film-forming solution; and carrying out ultrasonic deaeration on the film-forming solution, slowly pouring the film-forming solution into a culture dish, and drying the solvent to obtain thefreshness indication label. According to the present invention, the pH value of the film-forming solution in the preparation process of the indication label is adjusted according to the front-back relationship between the freshness indication label color transition point and the food spoilage point, such that the two time points are matched so as to achieve the purpose of precise indication; and the method is simple and easy to implement, and the prepared indication label has high sensitivity, has the sensitivity capable of being regulated based on food spoilage rule, and has wide application.

The invention relates to a high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board and a preparation method thereof and belongs to the technical field of a building fire-proof material. The high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board comprises the following components in parts by mass: 100 parts of phenolic resin, 10 to 20 parts of expansive fire retardant, 5 to 10 parts of liquid fire retardant, 5 to 8 parts of coal ash, 1 to 2 parts of tiny silicon powder, 1 to 2 parts of magnesium hydroxide, 5 to 7 parts of foaming agent, 5 to 7 parts of foam stabilizer and 20 to 30 parts of curing agent. The preparation method of the high-smoke suppression and high-oxygen index phenolic aldehyde fire-proof heat-preserving board comprises the following steps of 1) preparing a mixed slurry, i.e. (1) optionally selecting a formula, (2) mixing the phenolic resin and the liquid fire retardant, (3) mixing the expansive fire retardant, the hollow coal ash, the magnesium hydroxide and the tiny silicon powder, and adding the mixture into the mixed liquid, (4) adding the foaming agent and the foam stabilizer, and uniformly stirring the materials, and (5) adding the curing agent, stirring the materials, and filling the mixture into a die; and 2) molding and curing to obtain the fire-proof heat-preserving board. The fire-proof heat-preserving board has the advantages of convenience in construction, good fire resistance, low water absorption per volume, capability of meeting the requirements of high smoke suppression and high oxygen index of inner and outer wall heat-preserving boards, and the like.

The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment method and waste gas treatment equipment in sodium hydrosulfite production. The waste gas treatment method includes the steps of (1), pretreatment, (2) alkali liquor spraying, (3) photooxidation ion oxidation catalysis, (4) oxidation spray, and (5) adsorption. Through the waste gas treatment method, toxic substances difficult to decompose can be decomposed effectively, and efficiency of waste gas purification treatment is increased. The waste gas treatment equipment comprises a pretreatment device, a purification alkaline washing tower connected with the pretreatment device, a photooxidation ion oxidation catalysis reactor connected with the purification alkaline washing tower, an oxidation tower connected with the photooxidation ion oxidation catalysis reactor and a JS strong adsorption tower connected with the oxidation tower, and waste gas is treated via the pretreatment device, the purification alkaline washing tower, the photooxidation ion oxidation catalysis reactor, the oxidation tower and the JS strong adsorption tower in sequence. The equipment is high in automation level, easy to operate and low in production cost.

The present invention provides a paper base color comparison-type sensor array label and a preparation method and application thereof. The preparation method comprises: step 1: performing overall hydrophobic modification on filter paper through organosilane self-assembly; step 2: using ultraviolet light to perform local cleaning on the filter paper that undergoes overall modification, to obtain modified filter with a hydrophilic paper array hole area and a hydrophobic periphery; step 3: preparing a series of sensitive indicator ink according to food spoilage characteristic gas; and step 4: transferring the indicator ink to a corresponding array area of the modified filter paper, and performing drying to obtain the paper base color comparison-type sensor array label. The paper base color comparison-type sensor array label prepared by using the technical solution has advantages of being friendly to environment, capable of natural degradation, good in sensing unit consistency, high in reliability and the like. When the paper base color comparison-type sensor array label is applied to food freshness indication, a fingerprint spectrum of the array label before and after package can be used for not only accurately indicating a corruption point of food, but also performing extended indication on freshness of the food.

The invention discloses an ultrahigh-temperature composting method for treating vegetable waste. The method comprises the steps of mixing well vegetable waste and agricultural waste, and subjecting the mixture to high-temperature aerobic composting treatment with forced ventilation so that the vegetable waste is harmlessly treated. The invention is intended to solve the problems that a vegetable planting zone produces a large amount of waste that may carry various pathogens, the vegetable waste containing pathogens is difficult to recycle, and safety risk easily occurs in the subsequent utilization of the vegetable waste. By regulating initial materials and increasing highest composting temperature to higher than 70 DEG C without affecting thorough decomposition of compost, the vegetable waste can be converted into compost products safely. By using the compost products of the vegetable waste, soil can be improved, nutrients can be provided, and occurrence of plant disease and pest damage can be partly decreased; therefore, the input of pesticides and other agricultural chemicals is reduced, waste resources are recycled, and clean production of vegetable fields is achieved. The method of the invention is significant both economically and environmentally.

The invention relates to the technical field of agricultural underground irrigation, in particular to an energy-saving and environment-friendly three-dimensional underground infiltration irrigation device. The energy-saving and environment-friendly three-dimensional underground infiltration irrigation device comprises a vertical tank body, wherein the upper end and the lower end of the vertical tank body are provided with an upper sealing cover and a lower sealing cover respectively; the vertical tank body is provided with a plurality of infiltration pipes for infiltration irrigation around from top to bottom; the vertical tank body is connected with the infiltration pipes to form an infiltration irrigation unit; a water inlet pipe is arranged on the vertical tank body positioned above theinfiltration pipes; and a water inlet valve is arranged on the water inlet pipe. The energy-saving and environment-friendly three-dimensional underground infiltration irrigation device provided by the invention is not limited by regions, is more convenient and flexible to get water, and can not only connect with a pressurized pipeline, but also directly inject water manually, which fully solves the problem that conventional irrigation cannot be implemented due to hardening of road surfaces and uneven mountain slopes in urban greening, and greatly improves the survival rate of afforestation indesertified land.

The invention discloses a method for treating wastewater containing high-concentration pyrazine, which belongs to the field of sewage treatment methods. The method for treating the wastewater containing the high-concentration pyrazine is characterized in that most of suspended impurities in the wastewater are firstly removed by introducing the high-concentration pyrazine wastewater into a coagulation reaction tank I; after the coagulation reaction, effluent passes through a sedimentation tank I, and mud and water are separated; supernatant is introduced into a high-temperature Fenton reactionsystem, reaction effluent enters a coagulation reaction tank II, the reaction effluent flows into a sedimentation tank II for sedimentation, and the mud and the water are separated; the supernatant isintroduced into an ammonia distillation tower, and the wastewater after an ammonia recovery enters a biochemical regulating tank; the wastewater in the biochemical regulating tank is introduced intoa biochemical system, and the biochemical system adopts aerobic, hydrolytic acidification and aerobic biochemical combined processes to achieve an removal of COD, ammonia nitrogen and total nitrogen;after the biochemical effluent is deeply oxidized, the COD, the ammonia nitrogen and the total nitrogen are completely discharged up to the standard, and the biochemical effluent has good environmental effect.

The invention discloses a treatment method of acrylic acid wastewater, and belongs to the field of wastewater treatment method, according to the method, the acrylic acid wastewater is introduced to acoagulation reaction tank, so that most of the suspended impurities in the wastewater can be removed, and the sludge and water in the effluent after the coagulation reaction are separated by flowing through a sedimentation tank. The supernatant is introduced into a biochemical system, and the organic pollutants are degraded through one-stage continuous aerobic / ABR anaerobic / two-stage continuous aerobic / BAF aerobic, and the whole organic nitrogen of the wastewater is subjected to ammoniated, nitrated and denitrified reactions. The sediment sludge is subjected to external transportation treatment, the supernatant is discharged after reaching the standard. The biochemical combination process simultaneously ammoniates, nitrates and denitrifies the whole organic nitrogen of the wastewater, andtreats ammonia and nitrogen and whole nitrogen as important pollution indexes for treatment, and the operation cost is low. After the effluent is treated through biochemical treatment, the COD, ammonia nitrogen and whoel nitrogen are completely discharged according to the standard. Good environmental effect is provided.

The invention belongs to the technical field of ecological environment control and discloses an open pit coal mine rock dump-based waste rock soil formation method for land reclamation. The waste rocksoil formation method is a technique as follows: on the basis of evaluating and calculating lithologic differences and spatial distribution of different sedimentary rocks on a minable seam of an openpit coal mine, staggered excavation and classified stripping are carried out on different types of rocks (waste rocks) on the minable seam; the waste rocks are transported and stacked at different positions of a rock dump (waste dump) in a classified manner; layered compaction is carried out; and existing weathered coal, carbonaceous shales, shales, mudstones and the like of the open pit coal mine are stacked on a surface layer to replace soil for land reclamation, and are mixed and fermented with kitchen wastes and household wastes of mine workers for nutrification and organification, thereby completing waste rock soil formation. A treatment method for waste rock soil formation, waste rock reclamation and household waste harmless treatment of the workers for green mining is achieved; a novel soilless land reclamation mode for land reclamation of the open pit coal mine is innovatively formed; and the waste rock soil formation method has great environmental effect, economic effect andsocial effect.

The invention discloses a device for ecologically culturing seashell and alga in shallow sea and a method thereof. The device comprises a seashell culture raft and an alga culture raft. The seashell culture raft comprises at least two paralleled floating ropes; buoys are arranged on the floating ropes and are connected with the floating ropes through floating ties; the two ends of each floating rope are fixed by underwater fixing mechanisms; the alga culture raft made by at least one culture curtain is arranged above each two adjacent floating ropes; the adjacent culture curtains are fixed byfloating bamboo perpendicular to the floating ropes; and the two ends of the floating bamboo are connected with the floating ties. The device can be used to carry out the hanging culture of the seashell on the floating ropes and carry out the culture of the alga in the culture curtains floating above the floating ropes, thereby realizing the composite culture of the seashell and the alga. The device and the method have the advantages of reducing the culture cost, improving the culture efficiency and culture space utilization factor, and having good effects on the comprehensive use of shallow sea waters, the improvement of the water environment and the prevention and control of diseases.

The invention relates to an application of lignin and derived carbon thereof in anaerobic digestion. The invention discloses a method capable of increasing the application value of lignosulfonate andchanging / influencing the methane output of anaerobic digestion. Sodium (calcium) lignosulfonate is taken as the raw material to prepare derived carbon, then sodium (calcium) lignosulfonate and derivedcarbon are applied to anaerobic digestion, the inhibition mechanism of lignosulfonate on anaerobic digestion can be researched, and theoretical basis is provided for the biochemical treatment on wastewater rich in lignosulfonate. At the same time, derived carbon of lignosulfonate is added during the anaerobic digestion process, anaerobic microbes are enriched, the activity of anaerobic microbes is improved, and the methane output is increased.

The invention discloses a composition for rigid polyurethane foam. The polyurethane foam is prepared from the following components in parts by weight: 3 to 5 parts of polyether polyol A, 2 to 4 partsof polyether polyol B, 2 to 4 parts of polyester polyol C, 0.1 to 0.5 part of foam stabilizer, 0.1 to 0.3 part of pore opening agent, 0.2 to 0.6 part of catalyst, 0.2 to 1.0 part of water and 1 to 3 parts of flame retardant. The preparation method can be used for preparing the rigid polyurethane foam, and comprises the following steps: mixing the composition for the rigid polyurethane foam with isocyanate, and pouring the mixture into a foaming reaction mold for foaming reaction molding. The rigid polyurethane foam is of an open-cell structure, the foam density is larger than or equal to 30 kg / m < 3 >, the compressive strength is larger than or equal to 100 kPa, the aperture ratio is larger than or equal to 80%, the flame retardant property reaches the DIN 4102 B2 level, and the rigid polyurethane foam has good heat preservation performance and voice absorption performance and can be used for preparing plates with voice absorption performance.

The invention refers to a method of preparing the phenyl-urea type fissional-element high-efficacy plant grwoth regulator, pyridyl phenyl-urea N-(2-Cl-4-pyridyl)-N'-phenyl-urea. It uses cheap pyridine as the raw material to make 4-nitryl pyridine nitrogen oxide by oxidization and nitration, makes further halogenation reaction to produce 2-X-4-nitryl pyridine, X=Cl or Br, deoxidizes the 2-X-4-nitryl pyridine to obtain 2-X'-4-amino pyridine and then makes further condensation with phenyl iso-cyanate in toluene reaction medium to obtain the target production.

The invention relates to a method for removing sulfur dioxide and recycling sulfur in flue gas, and belongs to the technical field of desulfurization of flue gas. The method comprises the following steps of dedusting, desalting and cooling the flue gas containing the sulfur dioxide, so that that the content of TSP (total suspended particulate) in the flue gas is smaller than 10%; leading the pretreated flue gas into an absorbing device, and enabling water to absorb the sulfur dioxide in the water, so as to obtain a sulfur dioxide absorbing liquid and the desulfurized flue gas; leading 40 to 60% of sulfur dioxide absorbing liquid into a sulfate microbial reducing bacteria biochemical reactor, and reducing the sulfite in the sulfur dioxide absorbing liquid into hydrogen sulfide gas by the microbial reducing bacteria under the anaerobic function; leading the remaining sulfur dioxide absorbing liquid into a sulfur recycling reactor; using eluting gas to elute the hydrogen sulfide gas in the sulfate microbial reducing bacteria biochemical reactor, sending the hydrogen sulfide gas into the sulfur recycling reactor together with the eluting gas, and enabling the hydrogen sulfide gas to react with the sulfite in the sulfur dioxide absorbing liquid in the sulfur recycling reactor, so as to obtain the sulfur.

Provided is a server rack that, with a compact structure, efficiently cools a server and safely prevents damage to the server by a liquid coolant. The server rack (100) cools a server with cold air, and comprises: a shelf board on which the server is placed; a plurality of columns that directly or indirectly support the shelf board; an air current generating fan that generates an air current between multiple shelf boards placed at an interval in the extension direction of the columns and in a direction along the shelf boards; and an air cooler that is placed integrally with the server rack on the upstream side of the air current, and that cools air with a coolant. The air cooler has a coolant path for circulating the coolant, and a liquefied gas (RF), which serves as the coolant, flows in from a coolant inlet positioned on one end of the coolant path, is sent through the coolant path while evaporating, and is discharged from a coolant outlet positioned on the other end of the coolant path.

The invention discloses an evaporation residue solidification process based on landfill leachate full-quantitative treatment, and belongs to the technical field of solid waste treatment. The evaporation residue solidification process based on landfill leachate full-quantitative treatment comprises the following steps: mixing evaporation residues with a neutralizing curing agent, wherein the neutralization curing agent is selected from the group consisting of water-quenched slag, steel slag and furnace slag. The process provided by the invention completely replaces lime required to be added inthe existing process, saves the cement consumption, improves the compressive strength of the cured body while ensuring higher curing efficiency, avoids the generation of ammonia gas, and is environment-friendly, efficient and economic.

The invention discloses a breakwater capable of generating electricity by using waves. The upstream side of the cylindrical breakwater is provided with a water accumulating structure; the water accumulating structure comprises two side walls fixedly connected with the cylindrical breakwater; the bottoms of the two side walls are fixedly connected with a reinforced concrete cover plate; the two side walls are provided with inclined upstream fixed front baffle plates; the bottoms of the fixed front baffle plates are fixedly connected with the reinforced concrete cover plate; the reinforced concrete cover plate, the two side walls, the cylindrical breakwater and the fixed front baffle plates form a water accumulating pond with a water accumulating structure; a support frame of the water accumulating structure is arranged in the water accumulating pond; the bottom of the cylindrical breakwater is provided with a drainage flow channel communicated with the water accumulating pond; the drainage flow channel is communicated with the cylindrical breakwater; and a hydraulic power generation unit is arranged in the drainage flow channel. The breakwater capable of generating electricity by using waves has a wave-preventing function, is provided with a wave power generation device, has structural stability and high energy conversion efficiency, and realizes structural optimization.

The invention discloses a river channel ecosystem with functions of sewage interception, slope protection and water purification based on silt resource utilization and a construction method thereof. The ecosystem sequentially comprises a roadside sewage interception system which exposes the surface of a water body, an ecological slope protection system in the middle portion and a river channel water purification system in the water body which are arranged from an embankment on the one side of the river channel to the water body, wherein the roadside sewage interception system is composed and constructed by the splicing of bricks with the functions of sewage interception and water permeability, the ecological slope protection system comprises a silt soil protection slope and a vegetation concrete protection slope, and the river channel water purification system is composed of unit water purification system cages. Through the technology of the silt resource utilization and in cooperationwith three properties of the sewage interception, the slope protection and the water purification, and the constructed river is integrated in ecology, good in effect and strong in environmental effect.

The invention discloses a method for treating weak acid blue AS dye production wastewater. The method comprises the following steps: adjusting the pH value of the weak acid blue AS dye production wastewater to about 5; adding hydrogen peroxide into the wastewater according to a weight ratio of hydrogen peroxide to the wastewater being 1000:(5-10), uniformly mixing hydrogen peroxide and the wastewater, and then pumping the wastewater mixed with hydrogen peroxide into a cartridge filter for interception of suspended solids in the wastewater; triggering a 1.5-2.5 hours' catalytic oxidation reaction on organic substances in the wastewater under the catalytic action of a surface catalyst; pumping the wastewater subjected to the catalytic oxidation reaction into a biochemical water distribution reservoir, and adjusting the pH value of the wastewater to 7.5-8; pumping the wastewater with the adjusted pH value into a biochemical system for degradation of organic substances and total nitrogen in the wastewater, wherein the residence time is 18-30 hours; pumping a mixed solution comprising the wastewater subjected to degradation and sludge into a secondary sedimentation tank, wherein a standard supernatant is discharged and the sludge is treated later. Through the adoption of the method, the effluent chroma removing rate and the COD removing rate of the treated wastewater reach up to 94.0% and 96.0% respectively; the effluent can reach the discharge standards; the environmental and economic benefits are high.

Disclosed are a hybrid populous lasiocarpa and a planting method thereof. The hybrid populous lasiocarpa is obtained by hybridizing and breeding Chinese white poplar and European red poplar and named as environmental-protection Chinese populous lasiocarpa. The planting method comprises the steps of seedling, cottage, transplanting in forest establishment regions, maintenance and forest establishment. The e environmental-protection Chinese populous lasiocarpa has a timber cycle of 3-6 years and has the advantages of being hermaphrodite, flowerless, seedless, saline-alkaline-resistant, wind-resistant, disease-resistant, pest-resistant, wide in application range, rapid in growth, harmless to air and soil, high in timber yield and the like, thereby being capable of serving as environmental greening, city and road border tree or windbreak as well as economic tree for large-area mountains or hills. The good environmental effects, the high timber yield, the good material quality and the comprehensively-applicable economic value can generate high social and economic benefits.

The invention discloses a method for treating coking waste water after ammonia removal, which comprises the following steps: regulating the pH of the coking waste water after ammonia removal to 4-6; introducing the waste water into a safety filter and intercepting suspended materials in the water; adding hydrogen peroxide into the waste water and generating catalytic oxidation in the presence of a surface catalyzing agent for the reaction time of 1.5-2.5h; ntroducing the waste water into a biochemical distributing reservoir and regulating the pH to 7.5-8; pumping the waste water into a biochemical system for degrading organic pollutants in the waste water and removing total nitrogen pollutants in the waste water for the dwell time of 18-30 hours; introducing the mixed fluid of the waste water and sludge together into a secondary settling tank; discharging a supernatant reaching a standard; and transporting the sludge out for treatment. The method of the invention is carried out at normal temperature and pressure, and has mild reaction condition, high degree of automation, simple operation and small equipment investment, and the effluent water after biochemical treatment can completely reach the standard and be discharged, thereby reducing the pollutant to a low level, greatly reducing the chroma and having good environmental effect.

The invention relates to a concrete admixture and a preparation method thereof. The admixture comprises the following components in part by weight: 3 to 6 parts of methacrylic acid, 12 to 25 parts of polyethylene glycol mono-ether acrylate monomer, 1 to 2 parts of allyl sodium sulfonate, 0.5 to 1 part of polyether acrylate monomer, 5 to 25 parts of ferrous sulfate, 4 to 20 parts of industrial salt, 1 to 5 parts of fly ash and 8 to 15 parts of calcium carbonate powder. The calcium carbonate comprises the following steps of: preparing materials, performing copolymerization reaction on the methacrylic acid, the polyethylene glycol mono-ether acrylate monomer, the allyl sodium sulfonate and the polyether acrylate monomer to obtain a copolymer, stirring and mixing the ferrous sulfate, the industrial salt, the fly ash and the calcium carbonate powder, and mixing the mixture and the copolymer to obtain the concrete admixture. Compared with the prior art, the invention has the advantages that: on the premise that the liquidity of the slurry is not changed, the filling water quantity is reduced by 15 to 25 percent, and the early strength of concrete is increased by 15 to 40 percent; and the preparation method is simple, short in production period, low in cost and suitable for large scale production.

The invention discloses an environment-friendly composition for thermoplastic polyurethane foam and application thereof. Polyether polyol A, polyether polyol B and polyester polyol C are used as mainraw materials, an organosilicon surfactant, a pore opening agent, a catalyst, water and an emulsifier are used as assistants, no chlorofluorocarbon physical foaming agent is added, and the compositionhas a good environmental effect; the emulsifier is an environment-friendly product, and the composition does not contain a nonylphenol emulsifier, and is non-toxic and harmless to a human body; meanwhile, a reactive catalyst is adopted, so that organic volatile matters in the foam product are reduced. The thermoplastic polyurethane foam obtained through foaming is of an open-cell structure, the foam density is 30 kg / m<3>, the compressive strength is larger than or equal to 100 kPa, the aperture ratio is larger than or equal to 90%, the elongation at break is larger than or equal to 10%, and good sound absorption performance and good heat preservation performance are achieved.

The invention relates to a treatment method for full-amount resource utilization of municipal wet garbage, which comprises the following steps of (1) pretreating municipal wet garbage to prepare slurry, and carrying out anaerobic fermentation to generate biogas and a fermentation mixture, and (2) dehydrating the obtained fermentation mixture to obtain biogas slurry and biogas residues, drying the biogas residues, pyrolyzing and carbonizing to obtain biochar and pyrolysis byproducts, refluxing one part of the biogas slurry into the slurry in the step (1), and concentrating the other part of the biogas slurry to be used as an organic fertilizer for resource utilization. Compared with the prior art, resource utilization of all products obtained after anaerobic fermentation of the wet garbage can be achieved, meanwhile, it is guaranteed that heat in the system is self-sufficient, and the carbon sequestration and emission reduction benefits are improved.

The invention belongs to the technical field of wastewater treatment, and discloses an antimony-containing wastewater treatment technology. The technology comprises the steps that the pH value of the pretreated antimony-containing wastewater is adjusted to 5.0-7.0; the wastewater is intensively mixed with chlorine dioxide; the wastewater mixed with the chlorine dioxide is introduced into a tri-phase catalysis oxidation tower for an oxidation reaction; the obtained wastewater is treated through an antimony-removal reactor. COD in the water obtained after the wastewater is treated through the antimony-containing wastewater treatment technology is greatly reduced, the water has good biodegradability, so that a very large biochemical pool does not need to be built, and the adjustment period can be also greatly reduced; the wastewater obtained after biochemical treatment can completely reach the standards and is discharged, and the contaminants can be reduced to a very low level, and a good environmental effect is achieved.

The invention discloses an aqueous double-component polyurethane varnish and a preparation method of the aqueous double-component polyurethane varnish. The raw material formula of the aqueous double-component polyurethane varnish is composed of a component 1 and a component 2, wherein the component 1 comprises the following components: 55-65% of hydroxy polyurethane dispersion, 15-18% of water, 0.2-0.5% of acetobutyryl cellulose flatting agent, 0.5-0.8% of flowing deformation auxiliary agent, 0.5-0.8% of nano silica particle, 0.1-0.3% of defoamer, 0.3-0.5% of defoaming agent, 0.1-0.3% of thickener, 0.4-0.6% of film-forming auxiliary agent, 0.2-0.5% of aqueous drier and 0.5-1.5% of teflon wax; and the component 2 comprises 15-20% of polyisocyanate and 1-3% of degassing solvent. The aqueous double-component polyurethane varnish has the characteristics of fast drying speed and good leveling property, is not easy to generate bubbles, is easy to store, and can endow a varnish film with high hardness and high anti-scratching property.